/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */
package com.zhs.gccs.utils.zip.extra;

/**
 * This is a class that has been made significantly smaller (deleted a bunch of
 * methods) and originally is from the Apache Ant Project
 * (http://ant.apache.org), org.apache.tools.zip package. All license and other
 * documentation is intact.
 * 
 * Various constants used throughout the package.
 */
final class ZipConstants {
	private ZipConstants() {
	}

	/** Masks last eight bits */
	static final int BYTE_MASK = 0xFF;

	/** length of a ZipShort in bytes */
	static final int SHORT = 2;

	/** length of a ZipLong in bytes */
	static final int WORD = 4;

	/** length of a ZipEightByteInteger in bytes */
	static final int DWORD = 8;

	/** Initial ZIP specification version */
	static final int INITIAL_VERSION = 10;

	/** ZIP specification version that introduced data descriptor method */
	static final int DATA_DESCRIPTOR_MIN_VERSION = 20;

	/** ZIP specification version that introduced ZIP64 */
	static final int ZIP64_MIN_VERSION = 45;

	/**
	 * Value stored in two-byte size and similar fields if ZIP64 extensions are
	 * used.
	 */
	static final int ZIP64_MAGIC_SHORT = 0xFFFF;

	/**
	 * Value stored in four-byte size and similar fields if ZIP64 extensions are
	 * used.
	 */
	static final long ZIP64_MAGIC = 0xFFFFFFFFL;

}
